Bykon e



(No Model.)

B. E. PQSS.

PISTON ROD PACKING.

No. 368,916. Patented Aug. 23, 1887.

Ill-

' WIINESSES INV'EJVTOR a? m am mm UNITED STATES PATENT OFFICE.

BYRON E. FOSS, OF INDIANAPOLIS, INDIANA.

PISTON-.ROD PACKING.

SPECIFICATION forming part of Letters Patent No. 368,916, dated August 23, 1887.

Application filed April 27, 1887.

' zen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Piston Rod Packing and Valve Stem Packing; and I do declare the following to be a full, clear, and exact description of the invention, such as will'enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to lettersor figures of reference marked thereon,which form a part of this specification.

Figure l of the drawings is a vertical longitudinal section of my invention. Fig. 2 is a perspective view of ring D. Fig. 3 is a perspective view'of ring E. Fig. 4is a transverse section on line 00 m, Fig. 1; Fig. 5, perspective views of ring 13.

The invention relates to improvements in packing for valvespindles and piston-rods, referring more particularly to metaLrin'g packing; and it consists in the construction and novel arrangement of parts hereinafter set forth, and illustrated in the drawings.

Referring to the accompanying drawings, A designates a piston-rod extending through the packing-rings,as shown. The rings are formed in two divisions, the inner one of whichis composed of the ring B, formedof the sections B B and the solid ring 0. The sections B B each have the rabbets or shoulders G G at their meeting ends, which rabbets fit upon each other and are respectively provided with the shoulders H H. When these sections are closed, their surfaces form the flat inner face, 11*, and the inwardly beveled or reversed conical outer face, H which forms a seat for the conical inner face, 0, of the solid ring 0, the outer face, 0 of whichis fiat.--

The rings B and C fit loosely, as shown,upon the valve-stem or piston-rod, their bores being of larger diameter than the same. The outer division consists of the two similar rings,D and E, each divided into three equal sections and of about equal width. The ring D is composed of the sections d d (l, separated'or divided by the joints d, which run tangential to the rod or stem passing through the ring, and the ring E is divided into similar sections, 6 e e, by the Serial No.236,327. (N0 model.)

joints 6', also tangential to the said rod or stem, but in the opposite direction, the joints 6 being interposed between the joints d, so-as to break joints.

The bores or central openings of the rings D and E fit snugly on the rod or stem,and they are surrounded by abrass ringplate, F, equally as wide as their unitedwidths, and rendered expansibleby being cut at f. The said ring covers all the joints of the ring D, but leaves uncovered one joint, 6, of the ring E. The tangential joints allow the sections of the rings to move easily on each other when expanding, and prevent the said sections from binding, as radial joints would do if the expansion were unequal.

I is acircular plate-spring of steel surrounding the brass ring-plate F, and by its action holding the sectional rings D and E on the stem or rod, yet allowing them to give suficiently to prevent their binding thereon and to prevent their inner surfaces from being fused on the stem or rod, as might happen should the spring and sections not give enough outwardly. The rings D and E have flat faces, and the inner face, d", of the ring D forms a ground joint, d,with the flat outer face, 0 of the solid ring 0, so that the two divisions can have sufficient lateral motion on each other without interfering with or binding on the rod or stem.

The rings 13 andO being shown and described in the patent granted to me October 26, 1886, and numbered 351,695, I do not claim the same, broadly, but only in combination with the rings D and E, and other parts not shown in my patent referred to.

Having described my invention, I claim- 1. The combination, with the piston-rod or valve-stem and the rings B and O, substantially as described, of the sectioned rings, the inner one of which forms a fiat transverse joint with the outer flat face of the ring 0, the severed metal band surrounding the said sectioned rings, and the severed circular plate-spring surrounding the said metal band, substantially as specified.

2. The combination, with the piston-rod or valve-ste1n and the rings B and G, substantially as described, of the sectioned rings divided by joints running tangential to the said rod or stem, the severed metal band surrounding the said sectioned rings, and the severed E and breaking joints therewith, the cut brass plate-metalspring surrounding said band, subband surrounding the rings D and E, and the stantially as specified. circular steel plate-spring I, substantially as 3. The combination, with the piston-rod or specified. 5 valve-stem and the rings B and C, substan- In testimony whereof I affix my signaturein r 5 tially as described, of the rings D and E, compresence of two witnesses. posed of three equal sections separated by BYRON E. FOSS. joints running tangentially to the said rod or Witnesses: stem, the joints of the ring D being extended WM. .Lmrns,

10 in the direction opposite to those of the ring E. O. COOPER. 

